Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a coalizão democrática quando juntos podemos fazer mais é Sergio Castro (PC)?
 ###Tabelas: CREATE TABLE chamber_of_deputies (chamber_of_deputies_id AUTO_INCREMENT PRIMARY KEY, Dist. INT, Democratic Coalition VARCHAR, Alliance VARCHAR, Together We Can Do More VARCHAR, Independent Regional Force VARCHAR, Independents VARCHAR) CREATE TABLE assembly_segments (assembly_segments_id AUTO_INCREMENT PRIMARY KEY, Constituency number VARCHAR, Name VARCHAR, Reserved for ( SC / ST /None) VARCHAR, District VARCHAR, Number of electorates (2009) INT) CREATE TABLE current_and_past_rates (current_and_past_rates_id AUTO_INCREMENT PRIMARY KEY, From VARCHAR, Adult Rate VARCHAR, Development Rate VARCHAR, 16-17 Year Olds Rate VARCHAR, Apprentice Rate VARCHAR) CREATE TABLE iron_coaches (iron_coaches_id AUTO_INCREMENT PRIMARY KEY, Class to 1928 VARCHAR, Class from 1928 VARCHAR, Seats VARCHAR, Quantity INT, Year(s) of Manufacture VARCHAR, Remarks VARCHAR) CREATE TABLE engines (engines_id AUTO_INCREMENT PRIMARY KEY, Trim VARCHAR, Engine VARCHAR, Displacement VARCHAR, Power VARCHAR, Torque VARCHAR, Transmission VARCHAR, Fuel Mileage (latest EPA mpg - US ) VARCHAR)  
SELECT Democratic Coalition FROM chamber_of_deputies WHERE Together We Can Do More = Sergio Castro ( PC )